I opened my kiln and again my project didn’t turn out right. When I am going to slump in a deep dish my sides always seem to slump in the middle. I fuse two pieces of glass first and then proceed to slump it in a 5 segment stage. I heat it at 400 per hr to 1000 hold 20 min
heat at 900per hr to 1250 hold 20 min
afap to 960 hold610 minutes
200 per hr to 800 hold 10 min
400 per hr to 300 off
I have even used less holding time at the 1250 stage but the same thing occurs. This dish is 6 inches across and 5 ” deep. I have no trouble slumping with shallow molds. Any help would be appreciated.